Question 1.
cd /Users/yoodowon/Documents/Stat17LSec1
/Users/yoodowon/Documents/Stat17LSec1
Question2.
Yes, Because some of the alphabets were in capital and stata is sensitive in capitalize.
I corrected it by putting help sysuse.
Question 3.
1.clear
2.cd /Users/yoodowon/Documents/Stat17Sec1
3.use newauto.dta, clear
4.summarize
5.save morenewauto.dta, replace
6.clear
Question 4
1.clear
2.cd /Users/yoodowon/Documents/Stat17Sec1
3.sysuse citytemp.dta, clear
4.summarize
5.save newcitytemp.dta, replace
6.clear
Question 5
1. cd /Users/yoodowon/Documents/Stat17Sec1
2.sysuse wage2.dta, clear
3. save hy320, replace
Question 6
1. Hours, IQ, Educ, Exper, Tenure, Age, Subs, Meduc, Feduc
2. Hours, IQ, KWW, age, Sibs, meduc, feduc
3. Black South Urban Married
4.Years of work experience
5. Yes there is by period